Review
The Goodman 3.5 ton horizontal furnace and air conditioner system addresses a specific market need: efficient comfort in tight installation spaces. This unit combines a 92% AFUE gas furnace with a 14 SEER air conditioner, positioning itself as a mid-tier performer rather than a budget or premium option. Contractors frequently specify horizontal configurations for crawlspace and attic installations where traditional upflow units simply won't fit the available space.
Performance data shows solid fundamentals. The 100,000 BTU heating capacity with 92% AFUE efficiency delivers measurable savings over older 80% units. The 36,000 BTU cooling capacity at 14 SEER provides reasonable AC efficiency without reaching high-end 16-18 SEER territory. A multi-speed blower motor at 2,000 CFM maximum allows contractors to balance comfort and noise, though the 73 dB operating level runs slightly loud. Electrical requirements stay modest at 208/230v, 1 phase, 60 Hz.
Pros & Cons
Pros
- 92% AFUE furnace efficiency reduces heating costs compared to 80-85% models, saving approximately 10-15% annually on gas
- 14 SEER rating provides solid cooling efficiency at 3.5 ton capacity with 36,000 BTU output
- Horizontal configuration fits tight crawlspaces and attics where upflow units cannot be installed
- Multi-speed blower motor allows temperature control and reduced runtime noise compared to single-speed alternatives
- PVC/plastic exhaust flue compatibility simplifies installation in modern homes without masonry chimneys
- 10-year warranty with online registration covers both furnace and coil
Cons
- Single-stage burner and single-stage compressor mean less precise temperature modulation than two-stage equipment
- 14 SEER falls short of modern high-efficiency standards, now expecting 16-18 SEER in quality units
- 73 dB noise level runs slightly loud for a residential system during operation
- Not Energy Star certified, limiting eligibility for some utility rebate programs
- R22 refrigerant option outdated; R410A is standard but adds compatibility considerations for servicing
Who Should Buy
Best For
Contractors and homeowners upgrading older 80% AFUE systems in crawlspaces or attics need this horizontal unit for straightforward replacement. Budget-conscious buyers in mild to moderate climates benefit from the 92% efficiency boost without premium pricing.
Consider Alternatives If
Skip this if you need Energy Star certification for rebates, prefer quiet operation (below 70 dB), or want two-stage heating and cooling for superior comfort control.
Installation
Horizontal installation requires adequate crawlspace or attic clearance, with 21-inch height and 26-inch depth as key measurements. The unit supports both upflow and horizontal airflow directions for flexibility. PVC plastic exhaust flue compatibility eliminates expensive masonry work. Suction line insulation is included at 3/4-inch thickness. Electrical connection demands 18.7 to 30-amp breaker sizing. Refrigerant line lengths accommodate up to 30 feet between components.
Warranty & Reliability
Goodman includes a 10-year parts warranty when you register online, covering both the furnace and evaporator coil. This is standard industry coverage, offering reasonable protection without being exceptional. Registration is required to activate coverage, so documentation matters. Coverage excludes normal wear items and improper installation.
Specifications
| SKU | LS38343830 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 36,000 |
| Heating BTU | 100,000 |
| Refrigerant | R410A or R22 |
| Electrical | 208 / 230v 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 73 |
| Weight (in lbs) | 35.000000 |
| Feature | Spec |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 92% |
| Blower Motor | Multi Speed |
| Maximum CFM | 2000 |
| Configuration | Horizontal |
| Flue Location | Right |
| Burner Stages | Single |
| Fuel Type | Gas |
| Height | 21" |
| Width | 21.125" |
| Depth | 26" |
| Resources | CHPF Installation Manual CHPF Specifications Sheet Goodman Evaporator Coil Warranty You will need Adobe® Acrobat® Reader to view PDF documents. |
| Safety Information | PROPOSITION 65 WARNING This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here. |
| Energy Star | No |
| SEER1 (Efficiency) | 14 |
| Condenser Stages | Single Stage |
| Compressor Type | Scroll |
| Liquid Line | 3/8" |
| Suction Line | 3/4" |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 3/4" |
| Max Breaker Size | 30 Amps |
| Min. Breaker Size | 18.7 Amps |
| Tonnage | 3.5 Ton |
| Style | A-Coil |
| Suction Line Insulation Thickness | 3/4" |
| Length | 30 feet |
Frequently Asked Questions
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